diff --git a/resources/definitions/ultimaker3.def.json b/resources/definitions/ultimaker3.def.json
index 6a1fe963f5..b3a19f5d53 100644
--- a/resources/definitions/ultimaker3.def.json
+++ b/resources/definitions/ultimaker3.def.json
@@ -140,6 +140,7 @@
         "raft_margin": { "value": "10" },
         "raft_surface_layers": { "value": "1" },
         "retraction_amount": { "value": "6.5" },
+        "retraction_combing": {"value": "no_outer_surfaces", "default_value": "no_outer_surfaces"},
         "retraction_count_max": { "value": "10" },
         "retraction_extrusion_window": { "value": "1" },
         "retraction_hop": { "value": "2" },